Study the Mutations Described Below and Determine Which One Is

question 38

Multiple Choice

Study the mutations described below and determine which one is most likely to lead to cancer.

• A)A mutation in the Ras protein increases its affinity for GDP.
• B)A mutation in the Ras protein that prevents GTP hydrolysis.
• C)A mutation in a receptor protein that decreases its affinity for a growth factor.
• D)A mutation in a transcription factor that prevents it from binding to the DNA to transcribe genes that promote cell division.
• E)All of these mutations might lead to cancer.

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Definitions:

Dopamine

A neurotransmitter in the brain that plays a key role in controlling movement, emotional responses, and the brain's reward and pleasure centers.

Parkinson Disease

A neurodegenerative disorder that affects predominately dopamine-producing neurons in a specific area of the brain, leading to symptoms like tremors, stiffness, and difficulty with balance and coordination.

Midbrain

The middle portion of the brainstem, playing an important role in the processing of visual and auditory information, as well as motor control.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays a key role in arousal, attention, memory, and motivation.